/* eslint-disable no-irregular-whitespace */
/* eslint-disable no-nested-ternary */
/* eslint-disable no-restricted-syntax */

/* eslint-disable guard-for-in */
/**
 * num 小于0，左缩进num*2个空格； 大于0，右缩进num*2个空格。
 * @param {string} str 代码
 * @param {number} num 缩进次数
 * @param {number} len 【可选】缩进单位，空格数
 */
export function indent(str, num, len = 2) {
  if (num === 0) return str
  const isLeft = num < 0
  const result = []
  let reg
  let spaces = ''
  if (isLeft) {
    num *= -1
    reg = new RegExp(`(^\\s{0,${num * len}})`, 'g')
  } else {
    for (let i = 0; i < num * len; i++) spaces += ' '
  }

  str.split('\n').forEach((line) => {
    line = isLeft ? line.replace(reg, '') : spaces + line
    result.push(line)
  })
  return result.join('\n')
}

// 首字母大小
export function titleCase(str) {
  return str.replace(/( |^)[a-z]/g, (L) => L.toUpperCase())
}

// 下划转驼峰
export function camelCase(str) {
  return str.replace(/-[a-z]/g, (str1) => str1.substr(-1).toUpperCase())
}

export function isNumberStr(str) {
  return /^[+-]?(0|([1-9]\d*))(\.\d+)?$/g.test(str)
}

export const exportDefault = 'export default '

function stringify(obj) {
  return JSON.stringify(obj, (key, val) => {
    if (typeof val === 'function') {
      return `${val}`
    }
    return val
  })
}

function parse(str) {
  JSON.parse(str, (k, v) => {
    if (v.indexOf && v.indexOf('function') > -1) {
      return eval(`(${v})`)
    }
    return v
  })
}

export function jsonClone(obj) {
  return parse(stringify(obj))
}

export function jsonSimpleClone(obj) {
  return JSON.parse(JSON.stringify(obj))
}

// 深拷贝对象
export function deepClone(obj) {
  const _toString = Object.prototype.toString

  // null, undefined, non-object, function
  if (!obj || typeof obj !== 'object') {
    return obj
  }

  // DOM Node
  if (obj.nodeType && 'cloneNode' in obj) {
    return obj.cloneNode(true)
  }

  // Date
  if (_toString.call(obj) === '[object Date]') {
    return new Date(obj.getTime())
  }

  // RegExp
  if (_toString.call(obj) === '[object RegExp]') {
    const flags = []
    if (obj.global) {
      flags.push('g')
    }
    if (obj.multiline) {
      flags.push('m')
    }
    if (obj.ignoreCase) {
      flags.push('i')
    }

    return new RegExp(obj.source, flags.join(''))
  }

  const result = Array.isArray(obj) ? [] : obj.constructor ? new obj.constructor() : {}

  for (const key in obj) {
    result[key] = deepClone(obj[key])
  }

  return result
}

export function getQueryString(name) {
  let reg = new RegExp(`(^|&)${name}=([^&]*)(&|$)`, 'i')
  let r = window.location.search.substr(1).match(reg) // 获取url中"?"符后的字符串并正则匹配
  let context = ''
  // eslint-disable-next-line prefer-destructuring
  if (r != null) context = r[2]
  reg = null
  r = null
  // eslint-disable-next-line eqeqeq
  return context == null || context == '' || context == 'undefined' ? '' : context
}

/**
 * 获取当前域名
 *  http://www.baidu.com
 * @returns {string}
 */
export function getCurrentDomain() {
  return `${window.location.protocol}//${window.location.host}`
}

/**
 * 判断是否是Url
 * @param str
 * @returns {boolean}
 */
export function checkIsUrl(str) {
  const oRegUrl = new RegExp()
  // aa.bb.com
  oRegUrl.compile('^[A-Za-z]+://[A-Za-z0-9-_]+\\.[A-Za-z0-9-_%&?/.=]+$')
  if (!oRegUrl.test(str)) {
    return false
  }
  return true
}

/**
 * 打开
 * @param url
 */
export function openUrl(url) {
  const a = document.createElement('a')
  a.setAttribute('href', url)
  a.setAttribute('target', '_blank')
  a.setAttribute('id', 'd2admin-link-temp')
  document.body.appendChild(a)
  a.click()
  document.body.removeChild(document.getElementById('d2admin-link-temp'))
}

/**
 * json对象转url参数
 * @param json
 * @returns {string|*}
 */
export function jsonToParam(json) {
  if (!json) return ''
  return Object.keys(json)
    .map((key) => {
      if (json[key] === undefined) return ''
      return `${encodeURIComponent(key)}=${encodeURIComponent(json[key])}`
    })
    .join('&')
}

/**
 * 是否是json
 * @param str
 * @returns {boolean}
 */
// eslint-disable-next-line no-unused-vars
function isJsonString(str) {
  try {
    if (typeof JSON.parse(str) === 'object') {
      return true
    }
    // eslint-disable-next-line no-empty
  } catch (e) {}
  return false
}

/**
 * 是否是移动端
 * @returns {boolean}
 */
export function isMobile() {
  const info = navigator.userAgent
  const agents = ['Android', 'iPhone', 'SymbianOS', 'Windows Phone', 'iPod', 'iPad']
  for (let i = 0; i < agents.length; i++) {
    if (info.indexOf(agents[i]) >= 0) return true
  }
  return false
}

/**
 * 去除html标签 空格 保留文本
 */
export function removeHtmlTag(str) {
  if (!str) return ''
  return str.replace(/<[^>]+>/g, '').replaceAll('&nbsp;', '')
}

/**
 * 用正则表达式实现html转码
 */
export function htmlEncodeByRegExp(str) {
  var s = ''
  if (str.length == 0) return ''
  s = str.replace(/&/g, '&amp;')
  s = s.replace(/</g, '&lt;')
  s = s.replace(/>/g, '&gt;')
  s = s.replace(/\s/g, '&nbsp;')
  s = s.replace(/\'/g, '&#39;')
  s = s.replace(/\"/g, '&quot;')
  s = s.replace(/“/g, '&ldquo;')
  s = s.replace(/”/g, '&rdquo;')
  return s
}

/**
 * 用正则表达式实现html解码
 */
export function htmlDecodeByRegExp(str) {
  var s = ''
  if (str.length == 0) return ''
  s = str.replace(/&amp;/g, '&')
  s = s.replace(/&lt;/g, '<')
  s = s.replace(/&gt;/g, '>')
  s = s.replace(/&nbsp;/g, ' ')
  s = s.replace(/&#39;/g, "'")
  s = s.replace(/&quot;/g, '"')
  s = s.replace(/&ldquo;/g, '“')
  s = s.replace(/&rdquo;/g, '”')
  return s
}
/**
 * 普通数组去重 可以去NaN，不能去重复杂数组类型
 * @param arr
 * @returns []
 */
export function simpleUnique(arr) {
  const map = new Map()
  const newArr = []
  arr.forEach((item) => {
    if (!map.has(item)) {
      map.set(item, 1)
      newArr.push(item)
    }
  })
  return newArr
}

export function generateNanoId() {
  return Math.floor(65_536 * (1 + Math.random()))
    .toString(16)
    .slice(1)
}
